Welding tool and battery manufacturing equipment

Abstract

The embodiment of the utility model provides a welding tool and battery manufacturing equipment. The welding tool comprises a tool body, a connecting base, a pressing block and a dust collection assembly, the tool body is used for bearing a to-be-welded workpiece, and the connecting base is used for being connected with the tool body; the pressing block is arranged on the side, facing the to-be-welded workpiece, of the connecting base, is used for pressing the to-be-welded workpiece and is provided with a first avoiding hole used for exposing a welding area of the to-be-welded workpiece; the dust collection assembly is arranged on the side, away from the pressing block, of the connecting base and used for collecting smoke generated in the welding process. A notch communicating with the first avoiding hole is formed in the side wall of the pressing block in a penetrating mode. According to the technical scheme, the escape path of smoke dust can be increased, and the stability of the laser welding process is improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a welding tool and battery manufacturing equipment. Background Art

[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry. Electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of the industry's sustainable development. For electric vehicles, battery technology is a crucial factor in their development.

[0003] During the battery manufacturing process, when laser welding is used for the battery device box, a large amount of smoke and dust will accumulate in the welding area near the pressing block. The smoke and dust will interfere with the transmission of the laser beam, and the laser energy cannot be effectively transferred to the workpiece to be welded, thereby affecting the stability of the welding process. Utility Model Content

[0004] The present application provides a welding tool and battery manufacturing equipment, which can increase the escape path of smoke and dust and improve the stability of the laser welding process.

[0005] This application is achieved through the following technical solutions:

[0006] In the first aspect, an embodiment of the present application provides a welding tool, which includes a tool body, a connecting seat, a pressure block and a dust suction assembly. The tool body is used to carry the workpiece to be welded, and the connecting seat is used to be connected to the tool body; the pressure block is arranged on the side of the connecting seat facing the workpiece to be welded, and the pressure block is used to press the workpiece to be welded, and the pressure block has a first avoidance hole for exposing the welding area of ​​the workpiece to be welded; the dust suction assembly is arranged on the side of the connecting seat away from the pressure block, and the dust suction assembly is used to absorb the smoke generated during the welding process; wherein, the side wall of the pressure block is penetrated by a notch connected to the first avoidance hole.

[0007] In the technical solution of the embodiment of the present application, after the workpiece to be welded is placed on the tooling body, a pressure block is assembled to the tooling body via a connector, using the galvanized sheet metal of a battery case as an example. The pressure block is then pressed against the workpiece to be welded, positioning the workpiece. The first avoidance hole of the pressure block exposes the welding area of ​​the workpiece to be welded. During laser welding of the workpiece to be welded, a laser device emits a laser beam from the upper area of ​​the pressure block. After the laser beam passes through the first avoidance hole and irradiates the welding area of ​​the workpiece to be welded, a large amount of smoke and dust is generated in the welding area of ​​the workpiece to be welded, and a large amount of smoke and dust accumulates around the first avoidance hole. By providing a notch at the first avoidance hole of the pressing block, the notch is connected to the first avoidance hole, and under the action of the adsorption force of the dust suction component, a part of the dust in the welding area can directly escape to the upper area of ​​the first avoidance hole, and a part of the dust can also escape outward from one side of the notch and then escape to the upper area. That is, the setting of the notch allows the smoke in the first avoidance hole area of ​​the pressing block to not only escape upward, but also escape from one side of the notch of the pressing block and then escape upward, thereby increasing the escape path of the smoke in the welding area, being more conducive to the rapid discharge of the smoke in the welding area, reducing the risk of interference with the laser beam transmission due to the accumulation of a large amount of smoke in the welding area, allowing the energy of the laser beam to be more effectively transmitted to the welding area of ​​the workpiece to be welded, reducing the probability of welding defects such as incomplete penetration, insufficient penetration and porosity in the workpiece to be welded, and improving the stability of welding.

[0008] According to some embodiments of the present application, the dust collection assembly includes a first bracket and a dust collection piece. The first bracket is connected to the connecting seat. The first bracket is an annular structure to form a dust removal channel connected to the first avoidance hole. The dust collection piece is installed on the first bracket. The dust collection piece is used to form negative pressure in the dust removal channel.

[0009] In the above solution, the first bracket is disposed on the side of the connecting base facing away from the pressure block. The first bracket is annular in structure, and the dust collector is disposed on the first bracket. The dust collection channel formed by the first bracket can confine smoke escaping from the first avoidance hole within the annular area of ​​the dust collection channel, thereby facilitating the dust collector's centralized absorption of smoke generated during the welding process. This improves the dust collector's ability to handle the smoke generated during the welding process and reduces the risk of smoke concentrating in the welding area and interfering with laser beam transmission. Furthermore, the first bracket provides for the installation of the dust collector, and when the dust collector is mounted on the first bracket, the installation of the dust collector is more stable.

[0010] According to some embodiments of the present application, the connecting seat has an avoidance space for avoiding the welding area. Along the thickness direction of the connecting seat, the welding area, the first avoidance hole, the avoidance space and the dust removal channel at least partially overlap; at least one pressure block is arranged in the avoidance space.

[0011] In the above scheme, an avoidance space is provided on the connecting seat, so that the avoidance space can avoid the welding area of ​​the workpiece to be welded, that is, the area of ​​the first avoidance hole of the pressure block is exposed in the avoidance space, and the welding area, the first avoidance hole, the avoidance space and the dust removal channel at least partially overlap, so that the laser beam emitted by the laser device can pass through the dust removal channel, the avoidance space and the first avoidance hole in sequence and then irradiate the welding area of ​​the workpiece to be welded, thereby realizing welding of the workpiece to be welded.

[0012] According to some embodiments of the present application, at least two pressing blocks are provided in the avoidance space.

[0013] In the above scheme, at least two pressing blocks are arranged in the avoidance space. According to the actual welding area of ​​the workpiece to be welded, multiple pressing blocks can be arranged on the connecting seat to meet the multi-point welding of the workpiece to be welded, and share the same dust collection component, so the dust collection range is wider and the dust collection efficiency is higher.

[0014] According to some embodiments of the present application, there are multiple avoidance spaces, and on the same projection plane perpendicular to the thickness direction of the connecting seat, the orthographic projection of the dust removal channel covers all the avoidance spaces on the connecting seat.

[0015] In the above solution, the dust removal channel of the first bracket can cover the pressure blocks within the multiple avoidance spaces on the connecting base. The dust removal channel has a wider coverage range and can simultaneously cover multiple welding areas of the workpiece to be welded. On the one hand, this reduces the number of times the pressure blocks and dust collection components are assembled, and multi-point welding of multiple welding areas can be completed at one time, thereby improving welding efficiency. On the other hand, the dust removal channel in the dust collection component can simultaneously cover multiple welding areas. Dust in each welding area can be centrally collected by the same dust collection component, resulting in a wider coverage range and higher dust removal efficiency.

[0016] According to some embodiments of the present application, the first bracket includes four first side walls, and the four first side walls are connected end to end in sequence to form a dust removal channel.

[0017] In the above scheme, the first bracket includes four first side walls, that is, the four first side walls of the first bracket enclose a rectangular dust removal channel. The first bracket adopts a rectangular frame structure, which has good dust removal effect, simple manufacturing, and is conducive to the assembly and connection of the first bracket and the connecting seat.

[0018] According to some embodiments of the present application, dust collectors are installed on at least two first side walls of the first bracket.

[0019] In the above scheme, by installing dust suction parts on at least two first side walls of the first bracket, multiple dust suction parts can generate negative pressure adsorption force at multiple points in the dust removal channel, which has a better adsorption effect on smoke and dust, and can more quickly and fully absorb the smoke and dust in the dust removal channel.

[0020] According to some embodiments of the present application, the welding tool also includes an air knife, which is arranged on a first bracket. The air knife is farther away from the pressing block than the dust suction piece. The dust removal channel has a first end away from the pressing block. The air outlet of the air knife is arranged toward the first end to blow away the smoke and dust escaping from the first end.

[0021] In the above solution, the air knife is positioned at the first end of the first bracket. On the one hand, the angle of the air knife's air outlet is set so that the high-speed airflow from the air knife's air outlet avoids the laser device above. This high-speed airflow effectively blocks spatter generated during welding and disperses spatter and smoke escaping from the first end outward, preventing spatter from directly impacting the laser head of the laser device and thus protecting the laser device. On the other hand, the high-speed airflow from the air knife forms an air curtain, blocking most of the smoke in the dust removal channel within the dust removal channel, further facilitating the dust collection by the dust collector.

[0022] According to some embodiments of the present application, the welding tool further includes a second bracket, the second bracket is arranged at the first end of the first bracket, and the air knife is installed on the first bracket through the second bracket.

[0023] In the above solution, the air knife is installed at the first end of the first bracket through the second bracket. The second bracket can provide the air knife with installation and limiting functions, and the installation stability of the air knife is higher.

[0024] According to some embodiments of the present application, the pressing block is detachably connected to the connecting seat; and / or the first bracket is detachably connected to the connecting seat.

[0025] In the above solution, the detachable connection between the pressing block and the connecting seat facilitates quick assembly and disassembly of the pressing block, provides enhanced flexibility, and better achieves compression of the workpiece to be welded. Furthermore, the detachable connection between the first bracket and the connecting seat also facilitates quick assembly of the dust collection assembly, allowing the dust collection assembly to be quickly transferred to the tooling body and connected to the connecting seat of the corresponding welding station, providing greater flexibility.

[0026] In a second aspect, an embodiment of the present application further provides a battery manufacturing device, which includes the welding tooling of any of the aforementioned embodiments.

[0027] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 A schematic diagram of the structure of welding tooling provided in some embodiments of the present application;

[0030] Figure 2 for Figure 1 A is an enlarged schematic diagram;

[0031] Figure 3 A schematic diagram of the structure of the connection seat and the dust collection assembly in the welding tool provided in some embodiments of the present application;

[0032] Figure 4 A schematic diagram of the structure of a pressure block in a welding tool provided in some embodiments of the present application;

[0033] Figure 5 A schematic structural diagram showing the cooperation between the connecting seat and the dust collection assembly in the welding tool provided in some embodiments of the present application from another angle;

[0034] Figure 6 A structural schematic diagram showing another angle of cooperation between the connecting seat and the dust collection assembly in the welding tool provided in some embodiments of the present application;

[0035] Figure 7 A top view of the connection seat and the dust collection assembly in the welding tool provided in some embodiments of the present application;

[0036] Figure 8 A top view of a welding tool provided for some embodiments of the application;

[0037] Figure 9 for Figure 8 A magnified schematic diagram of B.

[0038] Icons: 100-welding tooling; 10-tooling body; 11-base; 12-cylinder; 13-support frame; 20-connecting seat; 21-avoidance space; 22-first connecting hole; 30-pressing block; 31-first avoidance hole; 32-gap; 33-second connecting hole; 40-dust suction assembly; 41-first bracket; 411-first side wall; 412-dust removal channel; 413-mounting hole; 42-dust suction piece; 50-second bracket; 51-air knife; 200-workpiece to be welded; 201-welding area. DETAILED DESCRIPTION

[0039] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0040] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary-secondary relationship.

[0041] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0042] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "attached" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0043] The term "and / or" in this application simply describes an association between related objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0044] The term "multiple" used in this application refers to more than two (including two). Similarly, "multiple groups" refers to more than two (including two) groups, and "multiple sheets" refers to more than two (including two) sheets.

[0045] The battery apparatus mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells, which are connected in series, parallel, or hybrid via a busbar.

[0046] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells. For example, the battery cell assembly may be a battery module, which is formed by arranging and securing multiple battery cells to form a single module. For example, a battery module may be formed by bundling multiple battery cells using cable ties.

[0047] In some embodiments, the battery device may be a battery pack, which includes a case and one or more battery cell assemblies, wherein the battery cell assemblies are housed in the case.

[0048] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box by fixing the battery module in the box.

[0049] As an example, the battery cell assembly may also be housed in the box by directly fixing the plurality of battery cells to the box.

[0050] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0051] In some embodiments, the battery device may be an energy storage device, including an energy storage container, an energy storage cabinet, and the like.

[0052] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0053] The battery cells may be, but are not limited to, lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-hydrogen batteries, nickel-cadmium batteries, lead-acid batteries, and the like.

[0054] In battery technology, when laser welding is used on the casing of a battery device, a pressing block is usually used to press and position the workpiece to be welded. Traditional pressing blocks are generally U-shaped or ring-shaped, and the through-hole in the middle of the traditional pressing block exposes the welding area of ​​the workpiece to be welded. However, after the traditional pressing block presses the workpiece to be welded, the through-holes of the pressing block enclose a closed welding area. However, because the through-holes of the pressing block are surrounded by a ring-shaped closed space, and the amount of smoke generated during the welding process is large, the smoke can only escape from the area above the through-holes of the pressing block. Due to the limited escape path of the smoke, the smoke and zinc vapor generated during the welding process cannot escape quickly and effectively, which may cause some of the smoke and zinc vapor to remain in the welding area, thereby interfering with the transmission of the laser beam, resulting in the inability to effectively transfer the laser energy to the workpiece, thereby affecting the stability of the welding process and the welding quality.

[0055] In view of this, in order to solve the problem of low stability of laser welding, some embodiments of the present application provide a welding tool, which includes a tool body, a connecting seat, a pressure block and a dust suction component. The tool body is used to carry the workpiece to be welded, and the connecting seat is connected to the tool body; the pressure block is arranged on the side of the connecting seat facing the workpiece to be welded, and the pressure block is used to press the workpiece to be welded, and the pressure block has a first avoidance hole for exposing the welding area of ​​the workpiece to be welded; the dust suction component is arranged on the side of the connecting seat away from the pressure block, and the dust suction component is used to absorb the smoke generated during the welding process; the side wall of the pressure block is penetrated by a notch connected to the first avoidance hole.

[0056] The welding tool provided in the embodiment of the present application is provided with a notch at the first avoidance hole of the pressing block, and the notch is connected to the first avoidance hole. Under the action of the adsorption force of the dust suction component, a part of the dust in the welding area can escape directly to the upper area of ​​the first avoidance hole, and a part of the dust can also escape outward from the notch and then escape to the upper area. That is, the setting of the notch allows the smoke and dust in the first avoidance hole area of ​​the pressing block to not only escape upward, but also escape from the side of the notch of the pressing block and then escape upward, thereby increasing the escape path of the smoke and dust in the welding area, being more conducive to the rapid discharge of the smoke and dust in the welding area, reducing the risk of interference with the laser beam transmission due to the accumulation of a large amount of smoke and dust in the welding area, allowing the energy of the laser beam to be more effectively transmitted to the welding area of ​​the workpiece to be welded, reducing the probability of welding defects such as incomplete penetration, insufficient penetration and porosity in the workpiece to be welded, and improving the stability of welding.

[0057] This application embodiment provides a welding tool, please refer to Figures 1 to 4The welding tool 100 includes a tool body 10, a connecting seat 20, a pressing block 30 and a dust suction assembly 40. The tool body 10 is used to carry the workpiece 200 to be welded, and the connecting seat 20 is used to be connected to the tool body 10; the pressing block 30 is arranged on the side of the connecting seat 20 facing the workpiece 200 to be welded, and the pressing block 30 is used to press the workpiece 200 to be welded. The pressing block 30 has a first avoidance hole 31 for exposing the welding area 201 of the workpiece 200 to be welded; the dust suction assembly 40 is arranged on the side of the connecting seat 20 away from the pressing block 30, and the dust suction assembly 40 is used to absorb the smoke generated during the welding process; wherein, the side wall of the pressing block 30 is penetrated by a notch 32 connected to the first avoidance hole 31.

[0058] Please refer to Figure 1 and Figure 2 The tooling body 10 is the main structure of the welding tooling 100 that supports the workpiece 200 to be welded. The tooling body 10 may be a frame structure. The connecting base 20 is used to mount the pressure block 30 and the dust collection assembly 40. The pressure block 30 and the dust collection assembly 40 are connected to the tooling body 10 via the connecting base 20. The connecting base 20 is the seat structure connected to the tooling body 10. The pressure block 30 is mounted on the side of the connecting base 20 facing the workpiece 200 to be welded, and the dust collection assembly 40 is mounted on the side of the connecting base 20 facing away from the pressure block 30.

[0059] The tooling body 10 may include a support frame 13, a base 11 and a cylinder 12. The support frame 13 is arranged below the base 11, and the support frame 13 provides support for the base 11. The base 11 serves as a welding platform for carrying the workpiece 200 to be welded. The workpiece 200 to be welded is placed on the base 11. The base 11 has a plurality of welding stations, and a cylinder 12 is provided at each welding station. The connecting seat 20 is connected to the driving end of the cylinder 12 through a connecting piece, that is, the connecting seat 20 is connected to the base 11 through the cylinder 12. The cylinder 12 can be used to lift the connecting seat 20, thereby driving the pressure block 30 to approach or move away from the workpiece 200 to be welded, thereby realizing the pressing positioning or separation of the workpiece 200 to be welded by the pressure block 30.

[0060] It should be noted that the dust collection assembly 40 is not shown on some of the connecting bases 20 on the tool body 10 in the drawings. This is to more conveniently illustrate the specific structure of the connecting base 20 and the pressing block 30. Therefore, the dust collection assembly 40 on some of the connecting bases 20 is hidden. In fact, each connecting base 20 is provided with a corresponding dust collection assembly 40.

[0061] The workpiece 200 to be welded can be a component used in battery device production, such as a battery device housing or end plate. For example, the battery device housing is often made of galvanized sheet metal. However, during laser welding of galvanized sheet metal, the zinc coating on the sheet metal evaporates during welding, forming zinc vapor. This zinc vapor ionizes under laser irradiation to form zinc plasma. This zinc plasma has a certain barrier effect on the laser beam, scattering and absorbing the laser energy. This reduces the laser beam energy reaching the workpiece 200 (i.e., the galvanized sheet metal of the housing), affecting weld quality and reducing the stability of the welding process.

[0062] The first avoidance hole 31 on the pressing block 30 refers to a through-hole structure opened on the pressing block 30 . The first avoidance hole 31 can avoid the welding area 201 of the workpiece 200 to be welded, that is, the first avoidance hole 31 can expose the welding area 201 of the workpiece 200 to be welded.

[0063] Please refer to Figure 4 The notch 32 on the pressing block 30 refers to a notch 32 structure formed by penetrating the inner and outer walls of the pressing block 30. The notch 32 is connected to the first avoidance hole 31, that is, due to the presence of the notch 32 around the first avoidance hole 31, the first avoidance hole 31 is a non-closed hole.

[0064] The number of notches 32 can be one or more. For example, when there is only one notch 32, the shape of the compact 30 is C-shaped or U-shaped. When there are multiple notches 32, the multiple notches 32 can be spaced apart along the circumference of the compact 30.

[0065] The dust collection assembly 40 is a dust collection mechanism located on the side of the connecting base 20 facing away from the pressure block 30. It creates negative pressure in the area of ​​the first relief hole 31 of the pressure block 30, thereby aspirating the fumes generated during laser welding. The dust collection assembly 40 and the pressure block 30 are located on opposite sides of the connecting base 20 in the thickness direction. The pressure block 30 is used to press against the workpiece 200 to be welded, while the dust collection assembly 40 absorbs the fumes generated during welding.

[0066] In the technical solution of the embodiment of the present application, after the workpiece 200 to be welded is placed on the tool body 10, taking the galvanized sheet of a battery case as an example, the pressing block 30 is assembled with the tool body 10 via the connecting seat 20. The pressing block 30 is pressed against the workpiece 200 to be welded, and the welded workpiece is positioned. The first avoidance hole 31 of the pressing block 30 exposes the welding area 201 of the workpiece 200 to be welded. When laser welding is performed on the workpiece 200 to be welded, the laser device emits a laser beam from the upper area of ​​the pressing block 30. After the laser beam passes through the first avoidance hole 31 and irradiates the welding area 201 of the workpiece 200 to be welded, a large amount of smoke and dust is generated in the welding area 201 of the workpiece 200 to be welded, and a large amount of smoke and dust accumulates around the first avoidance hole 31. By providing a notch 32 at the first avoidance hole 31 of the pressing block 30, the notch 32 is connected to the first avoidance hole 31. Under the action of the adsorption force of the dust suction component 40, a part of the dust in the welding area 201 can directly escape to the upper area of ​​the first avoidance hole 31, and a part of the dust can also escape outward from one side of the notch 32 and then escape to the upper area. That is, the setting of the notch 32 allows the smoke in the area of ​​the first avoidance hole 31 of the pressing block 30 to not only escape upward, but also escape from one side of the notch 32 of the pressing block 30 and then escape upward, thereby increasing the escape path of the smoke in the welding area 201, being more conducive to the rapid discharge of the smoke in the welding area 201, reducing the risk of interference with the laser beam transmission due to the accumulation of a large amount of smoke in the welding area 201, allowing the energy of the laser beam to be more effectively transmitted to the welding area 201 of the workpiece 200 to be welded, reducing the probability of welding defects such as incomplete penetration, insufficient penetration and porosity in the workpiece 200 to be welded, and improving the stability of laser welding.

[0067] According to some embodiments of this application, please refer to Figure 5 and Figure 6 The dust collection component 40 includes a first bracket 41 and a dust collection piece 42. The first bracket 41 is connected to the connecting seat 20. The first bracket 41 is an annular structure to form a dust removal channel 412 connected to the first avoidance hole 31. The dust collection piece 42 is installed on the first bracket 41. The dust collection piece 42 is used to form a negative pressure in the dust removal channel 412.

[0068] The first bracket 41 is an annular structure, which means that the first bracket 41 can be a cylindrical structure or a square frame structure. The specific structural shape of the first bracket 41 can be determined according to actual conditions.

[0069] The first bracket 41 is formed with an annular dust removal passage 412. Both ends of the dust removal passage 412 are open. Specifically, the end of the dust removal passage 412 closest to the first avoidance hole 31 is open, allowing the dust removal passage 412 to communicate with the first avoidance hole 31 of the pressing block 30. The other end of the dust removal passage 412 is open. The laser beam emitted by the laser device passes through the dust removal passage 412 and the first avoidance hole 31 and then acts on the welding area 201 of the workpiece 200 to achieve laser welding of the workpiece 200. Fumes generated during the laser welding process escape upward from the first avoidance hole 31 and enter the dust removal passage 412. The dust suction element 42 then removes the dust from the dust removal passage 412.

[0070] The dust collection component 40 also includes a dust collector (not shown in the figure). The dust collection component 42 can be a dust collection pipeline. One end of the dust collection pipeline is connected to the dust collector, and the other end of the dust collection pipeline passes through the first bracket 41 and is connected to the interior of the dust removal channel 412. The dust collector is connected to the dust removal channel 412 through the dust collection pipeline. The dust collector can provide suction, generate negative pressure in the dust removal channel 412, and suck away the smoke and dust entering the dust removal channel 412.

[0071] The dust suction pipeline may be provided with a valve for controlling the on-off of the dust suction pipeline. The number of the dust suction pipeline may be one or more. In the case where the number of the dust suction pipeline is more than one, the multiple dust suction pipelines may share the same vacuum cleaner.

[0072] The first bracket 41 is disposed on the side of the connecting base 20 facing away from the pressing block 30. The first bracket 41 is annular in structure, and a dust collecting member 42 is disposed on the first bracket 41. The dust removal passage 412 formed by the first bracket 41 can confine smoke escaping from the first avoidance hole 31 within the annular region of the dust removal passage 412. This facilitates the concentrated absorption of smoke generated during the welding process by the dust collecting member 42, thereby improving the dust collecting member 42's ability to handle the smoke generated during the welding process and reducing the risk of smoke concentrating in the welding area 201 and interfering with laser beam transmission. Furthermore, the first bracket 41 provides for the installation of the dust collecting member 42. The dust collecting member 42 is mounted on the first bracket 41, providing greater installation stability.

[0073] According to some embodiments of this application, please combine Figure 7 、 Figure 8 and Figure 9 The connecting seat 20 has an avoidance space 21 for avoiding the welding area 201. Along the thickness direction of the connecting seat 20, the welding area 201, the first avoidance hole 31, the avoidance space 21 and the dust removal channel 412 at least partially overlap; at least one pressing block 30 is arranged in the avoidance space 21.

[0074] The avoidance space 21 on the connecting base 20 refers to an avoidance area on the connecting base 20 where the welding area 201 can be exposed, and the avoidance space 21 can at least completely expose the first avoidance hole 31 of the pressing block 30 .

[0075] Along the thickness direction of the connecting seat 20, the welding area 201, the first avoidance hole 31, the avoidance space 21 and the dust removal channel 412 at least partially overlap, which means that the laser beam emitted by the laser device can pass through the dust removal channel 412, the avoidance space 21 and the first avoidance hole 31 in sequence and then act on the welding area 201 of the workpiece 200 to be welded.

[0076] By providing an avoidance space 21 on the connecting seat 20, the avoidance space 21 can avoid the welding area 201 of the workpiece 200 to be welded, that is, the area where the avoidance space 21 exposes the first avoidance hole 31 of the pressing block 30, and the welding area 201, the first avoidance hole 31, the avoidance space 21 and the dust removal channel 412 at least partially overlap, so that the laser beam emitted by the laser device can pass through the dust removal channel 412, the avoidance space 21 and the first avoidance hole 31 in sequence and then irradiate the welding area 201 of the workpiece 200 to be welded, thereby realizing welding of the workpiece 200 to be welded.

[0077] According to some embodiments of this application, please refer to Figure 9 At least two pressing blocks 30 are arranged in the avoidance space 21.

[0078] At least two pressing blocks 30 are disposed in the escape space 21, which means that two, three, or four pressing blocks 30 can be disposed in the escape space 21. It should be understood that the presence of a pressing block 30 in the escape space 21 does not mean that the pressing block 30 is completely located in the escape space 21. Instead, a portion of the pressing block 30 is connected to the connecting seat 20, and a portion of the pressing block 30 having the first escape hole 31 is located in the escape space 21.

[0079] In the case where two pressing blocks 30 are provided in the escape space 21 , the escape space 21 of the connecting seat 20 may expose the first escape holes 31 of the two pressing blocks 30 .

[0080] At least two pressing blocks 30 are arranged in the avoidance space 21. According to the actual welding area 201 of the workpiece 200 to be welded, multiple pressing blocks 30 can be arranged on the connecting seat 20 to meet the multi-point welding of the workpiece 200 to be welded, and share the same dust collection component 40, which has a wider dust collection range and higher dust collection efficiency.

[0081] According to some embodiments of this application, please refer to Figure 7 There are multiple avoidance spaces 21, and on the same projection plane perpendicular to the thickness direction of the connecting seat 20, the positive projection of the dust removal channel 412 covers all the avoidance spaces 21 on the connecting seat 20.

[0082] The number of the avoidance spaces 21 can be multiple, that is, the number of the avoidance spaces 21 on the connecting seat 20 can be two, three or four. Figure 7 and Figure 9 In this embodiment, the number of the avoidance spaces 21 can be two, and the two avoidance spaces 21 are respectively located on both sides of the connecting seat 20.

[0083] The opposite ends of the two avoidance spaces 21 on the connecting seat 20 are open ends. In this way, when the amount of dust generated in the welding area 201 is too large, most of the dust enters the dust removal channel 412, and a small amount of dust can also escape outward from the open end of the connecting seat 20, further increasing the escape path of the smoke.

[0084] On the same projection plane perpendicular to the thickness direction of the connecting seat 20, the orthographic projection of the dust removal channel 412 covers all the avoidance spaces 21 on the connecting seat 20, which means that the orthographic projections of all the avoidance spaces 21 on the connecting seat 20 fall within the orthographic projection of the dust removal channel 412, that is, the dust removal channel 412 can meet the dust removal requirements of the welding area 201 within all the avoidance spaces 21 on the connecting seat 20.

[0085] The dust removal passage 412 of the first bracket 41 is capable of covering the pressing blocks 30 within the multiple avoidance spaces 21 on the connecting base 20. The dust removal passage 412 has a wider coverage area and can simultaneously cover multiple welding areas 201 of the workpiece 200 to be welded. On the one hand, this reduces the number of times the pressing blocks 30 and the dust collection assembly 40 are assembled, allowing multi-point welding of multiple welding areas 201 to be completed at one time, thereby improving welding efficiency. On the other hand, the dust removal passage 412 in the dust collection assembly 40 can simultaneously cover multiple welding areas 201. Dust removal from each welding area 201 can be centralized through the same dust collection assembly 40, resulting in a wider coverage area and higher dust removal efficiency.

[0086] According to some embodiments of this application, please refer to Figure 5 and Figure 6 The first bracket 41 includes four first side walls 411 , and the four first side walls 411 are connected end to end in sequence to form a dust removal channel 412 .

[0087] The four first side walls 411 are connected end to end in sequence, which means that the first bracket 41 is a rectangular frame structure, and the cross-section of the dust removal channel 412 enclosed by the first bracket 41 is rectangular.

[0088] The first bracket 41 includes four first side walls 411, that is, the four first side walls 411 of the first bracket 41 enclose a rectangular dust removal channel 412. The first bracket 41 adopts a rectangular frame structure, which has good dust removal effect, simple manufacturing, and is conducive to the assembly connection between the first bracket 41 and the connecting seat 20.

[0089] According to some embodiments of the present application, at least two first side walls 411 of the first bracket 41 are equipped with dust collecting parts 42 .

[0090] The dust collecting member 42 is mounted on at least two first side walls 411 of the first bracket 41. This means that the dust collecting member 42 may be mounted on two first side walls 411 of the first bracket 41. The two first side walls 411 may be adjacent first side walls 411 or opposite first side walls 411. Of course, the dust collecting member 42 may also be mounted on three or four first side walls 411 of the first bracket 41, depending on the actual situation.

[0091] Please refer to Figure 5 and Figure 6 One or more mounting holes 413 for the dust collecting member 42 to pass through and install may be pre-opened on each first side wall 411 of the first bracket 41, and the dust collecting member 42 is connected to the interior of the dust collecting channel through the mounting hole 413.

[0092] A sealing plug (not shown) can be used to seal the mounting hole 413 of the first bracket 41 where the dust collecting member 42 is not installed, to ensure the integrity of the first side wall 411 of the first bracket 41. If a dust collecting member 42 is required based on actual dust removal needs, the sealing plug can be removed and the dust collecting member 42 can be installed in the mounting hole 413.

[0093] By installing dust suction parts 42 on at least two first side walls 411 on the first bracket 41, multiple dust suction parts 42 can generate negative pressure adsorption force at multiple points in the dust removal channel 412, which has a better adsorption effect on smoke and dust, and can more quickly and fully absorb the smoke and dust in the dust removal channel 412.

[0094] According to some embodiments of this application, please refer to Figure 5 and Figure 6 The welding tool 100 also includes an air knife 51, which is arranged on the first bracket 41. The air knife 51 is farther away from the pressing block 30 than the dust collecting member 42. The dust removal channel 412 has a first end away from the pressing block 30. The air outlet of the air knife 51 is arranged toward the first end to blow away the smoke and dust escaping from the first end.

[0095] The air knife 51 can be a strip-shaped air knife 51 or a ring-shaped air knife 51. In this embodiment, the air knife 51 is a strip-shaped air knife 51. The air knife 51 is used to blow a strong, high-speed airflow to remove dust, dry water stains, and cool the device. The air outlet of the air knife 51 can be arranged horizontally toward the first end or slightly inclined toward the first end.

[0096] When the air knife 51 is a strip-shaped air knife 51, there can be multiple air knives 51, and the multiple air knives 51 are distributed at intervals along the circumference of the first bracket 41, and the air outlets of the multiple air knives 51 can be slightly staggered in the air outlet angle, so as to better blow away the smoke and splashes escaping from the dust removal channel 412, and play a certain protective role on the laser head of the laser device.

[0097] The angle α between the air outlet of the air knife 51 and the horizontal plane is 0°≤α≤30°. The angle α between the air knife 51 and the horizontal plane is controlled within a range of 0° to 30°. The angle of the air outlet of the air knife 51 can be selected according to actual needs, so that the air knife 51 can better disperse the smoke and splashes escaping from the dust removal channel 412.

[0098] One end of the air knife 51 is connected to an air source via a pipeline. The air source can be a compressor or a blower. The air source provides a high-speed airflow to the air knife 51 through the pipeline, and the high-speed airflow is blown out of the air outlet of the air knife 51. The air knife 51 is a prior art and can be directly purchased. Therefore, it will not be described in detail here.

[0099] The air knife 51 is positioned at the first end of the first bracket 41. The angle of the air outlet of the air knife 51 is set so that the high-speed airflow from the air outlet avoids the laser device above. This high-speed airflow effectively blocks spatter generated during welding and disperses spatter and smoke escaping from the first end outward, preventing spatter from directly impacting the laser head of the laser device and thus protecting the laser device. Furthermore, the high-speed airflow from the air knife 51 forms an air curtain, which blocks most of the smoke within the dust removal channel 412 and facilitates the suction of the smoke by the dust collector 42.

[0100] According to some embodiments of this application, please refer to Figure 5 and Figure 6 The welding tool 100 further includes a second bracket 50 , which is disposed at a first end of the first bracket 41 , and the air knife 51 is mounted on the first bracket 41 through the second bracket 50 .

[0101] The second bracket 50 is a mounting structure for the air knife 51 and is fixedly connected to the first bracket 41. The air knife 51 is mounted on the second bracket 50, with the air outlet of the air knife 51 tilted toward the first outlet of the dust removal passage 412. The second bracket 50 can also be a square frame structure, enclosing the top of the first bracket 41.

[0102] The air knife 51 is installed at the first end of the first bracket 41 through the second bracket 50. The second bracket 50 can provide the air knife 51 with installation and limiting functions, and the installation stability of the air knife 51 is higher.

[0103] According to some embodiments of the present application, the pressing block 30 is detachably connected to the connecting base 20; and / or the first bracket 41 is detachably connected to the connecting base 20.

[0104] The pressing block 30 and the connecting seat 20 can be connected by clamping or bolting. Figure 3 and Figure 4 In this embodiment, the pressing block 30 and the connecting seat 20 are connected by bolts. The connecting seat 20 is provided with a plurality of first connecting holes 22, and the pressing block 30 is correspondingly provided with second connecting holes 33. The bolts are selected to pass through the corresponding first connecting holes 22 and second connecting holes 33 to connect and fix the pressing block 30 to the connecting seat 20.

[0105] The first bracket 41 is detachably connected to the connecting base 20, and the first bracket 41 and the connecting base 20 can be connected by a clamping or bolting method. In this embodiment, the connecting base 20 is provided with a plurality of first connecting holes 22, and the first bracket 41 is correspondingly provided with a third connecting hole. Bolts pass through the first connecting holes 22 and the third connecting holes to secure the first bracket 41 to the connecting base 20.

[0106] The detachable connection between the pressing block 30 and the connecting base 20 facilitates quick assembly and disassembly of the pressing block 30, provides greater flexibility, and better achieves compression of the workpiece 200 to be welded. Furthermore, the detachable connection between the first bracket 41 and the connecting base 20 facilitates quick assembly of the dust collection assembly 40, allowing the dust collection assembly 40 to be quickly transferred to the tooling body 10 and connected to the connecting base 20 of the corresponding welding station, providing greater flexibility.

[0107] An embodiment of the present application further provides a battery manufacturing device, which includes the welding tool 100 of any of the aforementioned embodiments.

[0108] In some embodiments, please refer to Figures 1 to 9The welding tool 100 includes a tool body 10, a connecting seat 20, a pressing block 30 and a dust suction assembly 40. The tool body 10 is used to carry the workpiece 200 to be welded, and the connecting seat 20 is connected to the tool body 10; the pressing block 30 is arranged on the side of the connecting seat 20 facing the workpiece 200 to be welded, and the pressing block 30 is used to press the workpiece 200 to be welded. The pressing block 30 has a first avoidance hole 31 for exposing the welding area 201 of the workpiece 200 to be welded; the dust suction assembly 40 is arranged on the side of the connecting seat 20 away from the pressing block 30, and the dust suction assembly 40 is used to absorb the smoke generated during the welding process; wherein, the side wall of the pressing block 30 is penetrated by a notch 32 connected to the first avoidance hole 31. The dust collection assembly 40 includes a first bracket 41 and a dust collection piece 42. The first bracket 41 is connected to the connecting seat 20. The first bracket 41 is an annular structure to form a dust removal channel 412 connected to the first avoidance hole 31. The dust collection piece 42 is installed on the first bracket 41. The dust collection piece 42 is used to form negative pressure in the dust removal channel 412.

[0109] By providing a notch 32 at the first avoidance hole 31 of the pressing block 30, the notch 32 is connected to the first avoidance hole 31. Under the action of the adsorption force of the dust suction component 40, a part of the dust in the welding area 201 can directly escape to the upper area of ​​the first avoidance hole 31, and a part of the dust can also escape outward from the notch 32 and then escape to the upper area. That is, the setting of the notch 32 allows the smoke in the area of ​​the first avoidance hole 31 of the pressing block 30 to not only escape upward, but also escape from the side of the notch 32 of the pressing block 30 and then escape upward, thereby increasing the escape path of the smoke in the welding area 201, being more conducive to the rapid discharge of the smoke in the welding area 201, reducing the risk of interference with the laser beam transmission due to the accumulation of a large amount of smoke in the welding area 201, allowing the energy of the laser beam to be more effectively transmitted to the welding area 201 of the workpiece 200 to be welded, reducing the probability of welding defects such as incomplete penetration, insufficient penetration and porosity in the workpiece 200 to be welded, and improving the stability of welding. The first bracket 41 is annular in structure, and the dust collector 42 is mounted on the first bracket 41. The dust collection passage 412 formed around the first bracket 41 can confine smoke escaping from the first avoidance hole 31 within the annular region of the dust collection passage 412. This facilitates the concentrated absorption of smoke generated during the welding process by the dust collector 42, thereby improving the dust collection unit's ability to handle the smoke generated during the welding process and reducing the risk of smoke concentrating in the welding area 201 and interfering with laser beam transmission. Furthermore, the first bracket 41 provides a mounting location for the dust collector 42. Mounting the dust collector 42 on the first bracket 41 provides greater installation stability.

[0110] In some embodiments, the connecting seat 20 has an avoidance space 21 for avoiding the welding area 201. Along the thickness direction of the connecting seat 20, the welding area 201, the first avoidance hole 31, the avoidance space 21 and the dust removal channel 412 at least partially overlap; two pressing blocks 30 are arranged in the avoidance space 21, and the number of avoidance spaces 21 is two. On the same projection plane perpendicular to the thickness direction of the connecting seat 20, the positive projection of the dust removal channel 412 covers the two avoidance spaces 21 on the connecting seat 20.

[0111] The avoidance space 21 can avoid the welding area 201 of the workpiece 200 to be welded, that is, the area where the avoidance space 21 exposes the first avoidance hole 31 of the pressing block 30, and the welding area 201, the first avoidance hole 31, the avoidance space 21 and the dust removal channel 412 at least partially overlap. In this way, the laser beam emitted by the laser device can sequentially pass through the dust removal channel 412, the avoidance space 21 and the first avoidance hole 31 and then irradiate the welding area 201 of the workpiece 200 to be welded, thereby achieving welding of the workpiece 200 to be welded. The dust removal channel 412 of the first bracket 41 can cover the pressing block 30 within the two avoidance spaces 21 on the connecting seat 20. The dust removal channel 412 has a wider coverage range and can simultaneously cover multiple welding areas 201 of the workpiece 200 to be welded. On the one hand, the number of times the pressing block 30 and the dust collection assembly 40 are assembled is reduced, and multi-point welding of multiple welding areas 201 can be completed at one time, thereby improving welding efficiency. On the other hand, the dust removal channel 412 in the dust collection component 40 can cover multiple welding areas 201 at the same time, and the dust removal of each welding area 201 can be centralized through the same dust collection component. The dust removal channel 412 has a wider coverage range and higher dust removal efficiency.

[0112] In some embodiments, the first bracket 41 includes four first side walls 411, which are connected end to end to form a dust removal channel 412. The welding tool also includes an air knife 51, which is disposed on the first bracket 41. The air knife 51 is farther away from the pressure block 30 than the dust collector 42. The dust removal channel 412 has a first end away from the pressure block 30. The air outlet of the air knife 51 is disposed toward the first end to blow away smoke and dust escaping from the first end. The welding tool 100 also includes a second bracket 50, which is disposed at the first end of the first bracket 41. The air knife 51 is mounted to the first bracket 41 via the second bracket 50.

[0113] The first bracket 41 is constructed as a rectangular frame, which provides excellent dust removal, is simple to manufacture, and facilitates assembly and connection between the first bracket 41 and the connecting base 20. An air knife 51 is positioned at the first end of the first bracket 41. The angle of the air knife 51's air outlet is set so that the high-speed airflow from the air knife 51 avoids the laser device above. This high-speed airflow effectively blocks spatter generated during welding and disperses spatter and smoke escaping from the first end outward, preventing them from directly impacting the laser head of the laser device, thus protecting the laser device. Furthermore, the high-speed airflow from the air knife 51 forms an air curtain, trapping most of the smoke within the dust removal passage 412 and further facilitating dust absorption by the dust collector 42. The air knife 51 is mounted to the first end of the first bracket 41 via a second bracket 50, which provides mounting and positioning functions for the air knife 51, enhancing its installation stability.

[0114] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and components may be substituted with equivalents without departing from the scope of the present application. In particular, the various technical features described in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A welding tool, characterized in that: include: The tooling body is used to carry the workpiece to be welded; A connecting seat, used for connecting to the tooling body; A pressing block is provided on a side of the connecting seat facing the workpiece to be welded, the pressing block is used to press the workpiece to be welded, and the pressing block has a first avoidance hole for exposing the welding area of ​​the workpiece to be welded; A dust collection component is provided on a side of the connecting seat away from the pressing block, and is used to absorb smoke and dust generated during welding; Wherein, a notch communicating with the first avoidance hole is provided through the side wall of the pressing block.

2. The welding tool according to claim 1, characterized in that: The dust collection component comprises: a first bracket connected to the connecting seat, the first bracket being an annular structure and having a dust removal channel communicating with the first avoidance hole; A dust collecting component is installed on the first bracket, and the dust collecting component is used to form a negative pressure in the dust removal channel.

3. The welding tool according to claim 2, characterized in that: The connecting seat is provided with an avoidance space for avoiding the welding area of ​​the workpiece to be welded; Along the thickness direction of the connecting base, the welding area, the first avoidance hole, the avoidance space and the dust removal channel at least partially overlap.

4. The welding tool according to claim 3, characterized in that: At least two pressing blocks are arranged in the avoidance space.

5. The welding tool according to claim 3, characterized in that: There are multiple avoidance spaces; On the same projection plane perpendicular to the thickness direction of the connecting seat, the orthographic projection of the dust removal channel covers all the avoidance spaces on the connecting seat.

6. The welding tool according to claim 2, characterized in that: The first bracket includes four first side walls, and the four first side walls are sequentially connected end to end to form the dust removal channel.

7. The welding tool according to claim 6, characterized in that: The dust collecting member is installed on at least two of the first side walls of the first bracket.

8. The welding tool according to claim 2, characterized in that: The welding tool also includes: An air knife is arranged on the first bracket. The air knife is farther away from the pressing block than the dust collecting member. The dust removal channel has a first end away from the pressing block. The air outlet of the air knife is arranged toward the first end to blow away the smoke and dust escaping from the first end.

9. The welding tool according to claim 8, characterized in that: The welding tool also includes: The second bracket is arranged at the first end of the first bracket, and the air knife is installed on the first bracket through the second bracket.

10. The welding tool according to claim 2, characterized in that: The pressing block is detachably connected to the connecting seat; and / or the first bracket is detachably connected to the connecting seat.

11. A battery manufacturing device, characterized in that: The invention comprises a welding tool according to any one of claims 1 to 10.

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